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(No Model.) 2 Sheets-Sheet 1.

0'. A. MORRIS. DRBDGING BUOKET.

No. 341,763. Patented May 11, 1886.

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(No Model.) 2 Sheets-Sheet 2.

O. A. MORRIS. DREDGING BUGKET.

No. 341,763. Patented May 11, 1886.

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CHARLES A. MORRIS, OF BLOOMFIELD, NEW JERSEY.

DREDGlNGv-BUCKET.

SPECIFICATION forming part of Letters Patent No. 341,763, dated May 11, 1886.

Application filed June 22, 1885.

To (ZZZ whom it may concern:

Be it known that I, GHARLns A. MoRRIs, of Bloomfield,in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Dredging-Buckets; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is afront elevation of bucket. Fig. 2 is a side elevation of same. Fig. 3 is a (letail of frame carrying the wheels and lugs. Fig. 4 is a detail of top shaft. Fig. 5 is a front elevation of grappler. Fig. 6 is a side elevation of same.

Like letters indicate corresponding parts in all the figures.

My invention relates to certain new and useful improvements in that class of excavating apparatus which is known to the trade as clanrshell and grapple buckets.

The object is to providelighter and shorter buckets, and also to strengthen the shells of same. The bucket being of less weight, more material can be handled and lifted forthe samepowcr expended,and its shortness allows the boom to have less hoist, and in dredging coal out of vessels it can go under the-combings, thereby clearing out the hold more thoroughly.

The construction and operative parts will be hereinafter fully set forth and pointed out.

In Figs. 1, 2, 3, 5, and 6 the double wheels X Y X Y are held in the cross-frame E, and are formed with a large and small sheave,side by side, revolving on the pins 0. The large sheaves overlap one another, thereby giving a great advantage over other buckets of this class, as,with the chains A being attached to the large sheaves, a continued command is held over the chains O,which are attached to the small sheaves,and it will be perceived that by the large sheaves overlapping each othera greater leverage is obtained for thesame width of bucket than can be obtained by others of the same class. The frame E is placed across the bucket. It is cast in two parts and bolted together. The lugs M and M being cast on, reduces the cost of construction, and also Serial No. 169,395. (No model.)

strengthens the bucket. The chain-wheels revolve on pins 0, and to the lugs M and M the side and intermediate heads are hinged. The intermediate head, P, is fastened between the side heads, N, to the back of the shell, and hinged to thelugs M. on the cross-frame 1*]. It is also connected with the top shaft, S, by the arm F. (See Figs. 4 and 5.) When the crosshead illustrated in such figures is combined with the bucketsl1ells shown in Fig. 1, it thereby gives great strength to the shell, and prevents it being twisted or bent in scraping up or carrying its load.

I do not confine myself to one intermediate head, as my intention is to have one or more, as the circumstances may require.

Fig. lis a detail of the double top shaft,S, which is so arranged with the castings T, con-- necting the two bars upon which the arms F and F are seeured,as to leave an open space in the middle, through which the chain A travels, which dispenses with the usual extension on the frame E to guide this chain,and keeps the bucket upright upon its work, the castings T have projections top and bottom,to which the chains B and O are attached.

D is the ordinary top shaft, and can be used when the intermediate arms are not required.

A is the hoisting-chain. B is the backingchain. 0 are the short chains connecting the small sheaves X X to the top shaft,D or S.

The bucket is operated by the chains Aand B. IV hen the chain A is loosened and chain 13 tightened, the weight coming on the chains 0 causes the chain-wheels X Y to revolve. This allows the top shaft, D or S, to rise, which draws the arms F and F upward, and thus opens the shells of the bucket. "When "the motion is reversed, the chain A, being wound around the sheaves Y, will, upon the strain coming on it, revolve the chain-wheels X Y the other way, and cause the chains 0 to be taken upon the sheaves X. This draws the top shaft down again and forces the shells together, closing the bucket;

The chain A having the advantage over the chainB of the leverage between the sheaves X and Y, allows equal hoistingpower to be applied to each chain without the bucket opening when it is being hoisted or moved from side to side.

Instead of shells, grapples P may be attached to the frame of the bucket, as shown in Figs. 5 and 6.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States 1. In combination with a clam-shell bucket, the double wheels X Y, overlapping each other, forming a continuous leverage without altering the width of bucket placed in the cross-frame E, revolving on pins 0, substantially as described,for the purpose set forth.

2. In combination with a clam-shell bucket, the cross-frame E,with lugs M and M cast on, forming cross-heads, and secured together by the bolts L and pins 0, substantially as described, and for the purpose set forth.

3. In combination with a clam-shell bucket, the intermediate head,P, for strengthening the shells, substantially as described, and for .the purpose set forth.

4. In combination with a clam-shell bucket, the double top shaft, S,with bars, upon which the arms F and F are attached, and castings T, substantially as described, and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

O. A. MORRIS.

Witnesses:

Ii. 1*]. BLIss, W. VAN RIPER. 

